Just based on his first impression that he had just started the war, Huang Quan was quite disappointed with Yuan Shaojun's defensive ability.

Fortunately, Zhuge Liang, who accompanied Huang Quan to watch the battle, had already seen the gap in his heart from his eyes and expressions, and explained quietly:

"Don't worry, this is just the beginning. Ju Su is very resilient. Breaking a wall is just the first step. He didn't intend to rely on this earth wall to defend us. This wall delayed our attack and restricted our troops from spreading.

However, we can no longer see the situation behind the wall. Gongheng still followed me to the rear of the building. He observed with a telescope. Yuan Jun has also learned leverage catapults. Our army did not dare to build the building within three hundred steps of the frontier, so we could only try to build the building a building higher and observe it with a special crystal mirror group."

Zhuge Liang said, leading Huang Quan to walk hundreds of steps behind and climbed a tower five hundred steps away from the earth wall. The height of the tower in the wooden part was ten feet high. Moreover, this wooden building was not built on flat ground, but there was a rammed earth base five feet high covering the stone wall below, which totaled fifteen feet, and even if it was far away from the front line, the view was still good enough.

This is the first time Huang Quan has personally come into contact with a strategic observation equipment like the "teleoscope" that is always confidential and well-confident. When using it, he was a little nervous and afraid of accidentally smashing the crystal, so he hurriedly hung the strap on the telescope around his neck, so that it would not fall off if it was not held.

This thing does not require mass production, and the number of equipment is very small, only high-level generals can use it, so the confidentiality level is extremely high, and there is no possibility of being copied by the enemy from the battlefield.

Even though Zhuge Liang invented the telescope four years ago, the princes of Kanto still do not know its specific existence. They just vaguely reversed the results and realized that Liu Bei's army might have battlefield vision reconnaissance equipment beyond their imagination.

Huang Quan adapted to the use of the telescope for a few seconds and quickly found the target to observe.

On the battlefield five hundred steps away, as the Han military trench chariots and trenchers made a gap, Guan Yu immediately invested thousands of elite infantry, including a certain proportion of iron-armored soldiers, and rushed up to the gap.

At the same time, all the crossbowmen of the Han army were pressed down, further providing deeper long-range firepower suppression. After a winter of farming development, the total number of divine arm crossbows in Liu Bei's camp increased by three to four thousand, and the Hanoi battlefield on the northern line was divided into two thousand.

Now the total equipment scale of the Divine Arm Crossbows under Guan Yu's troops has exceeded 5,000, and the scale of Li Su's equipment in the south is about the same, with a total of nearly 10,000 in the country. This sharp single-soldier crossbow with a range of 300 steps has become a rising elite long-range strike force.

Huang Quan saw the speed of Guan Yu's long-range troops' investment, and was still a little confused, and couldn't help but comment on Zhuge Liang:

"The powerful crossbowmen lack heavy armor, so they approached to support so quickly, and they were invested too quickly. Our army's God-arm crossbows have a range advantage of at least 100 steps than enemy crossbowmen. They can shoot to the walls of the corridor without having to go so close.

Why is the Taiwei so impatient? Before the melee infantry completely seized the outer wall of the corridor, they let the strong crossbows forward and be able to shoot at the same range as the enemy's front row, which is the same as the ordinary crossbows in front of the enemy. Isn't this increasing casualties in vain?"

Huang Quan's view is very simple: Since our army has light armor, strong firepower troops, and has the advantage of equipment range, it should fly kites where the enemy cannot fight back. Of course, it does not mean that we should not rush up, but the task of rushing is first handed over to the close-kill iron armored soldiers, so that the fleshy troops can stand in front.

In another way, ordinary spectators in later generations can understand, that is, "Where can't let DPS rush to the front row with the meat shield to fight with the enemy?"

At the same time, the facts seemed to prove Huang Quan's correctness, because after the long-range soldiers of the Han army, including the god-arm crossbowmen, came forward, they were indeed subjected to a certain amount of counterattack firepower, and there were seemingly unnecessary casualties. Although the Han army's crossbowmen were very morale, they were not scared away by these casualties, and they still firmly carried out Guan Yu's orders.

But Zhuge Liang just replied to Huang Quan’s question, “Don’t be anxious, read further.”

Huang Quan had to continue to observe patiently. Not long after, he finally discovered the mystery of the problem.

"When the Taiwei didn't completely take down the outer wall of the corridor, he asked the crossbowman to step forward in order to suppress the opponent Ju Su to send the subsequent reserve team to the gap! Delay the speed of Ju Su pulling Yuan's reinforcements up to block the mouth!"

His eyes continued to extend into the depths of the front line, and gradually he saw the mystery of the battlefield more and more clearly.

Ju Zu's first fortification indeed seemed broken, and it couldn't last long under the concentrated attack of the catapult array.

However, Ju Su set up more than one fortification! Within his eyesight, there seemed to be at least three. Moreover, each corridor formed by a long ditches in the earth wall was only three to four hundred steps away.

In terms of construction work volume, dig a trench two or three meter wide and deep trench, and then pile up the excavated soil into a three-meter-high and three-meter-thick rammed earth wall. The total amount of earthwork is similar to digging three one-meter-wide and deep trenches and three one-meter-half-high and one-half-high rammed earth walls.

This is a bit of mathematical knowledge. The wall thickness and height are reduced by half, the cross-sectional area is only one quarter, and the construction volume is approximately one quarter (in fact, it will be a little more).

The earth wall of the corridor defense line placed on the front line was obviously very cut corners. It was completely smashed out of the gap in just over an hour. But the problem is that with limited resources, he chose to repair three earth walls that cut corners to form a defense depth.

What was Ju Su's troops doing in the hour and a half when Guan Yu smashed the exterior wall just now? They dug soil behind the first wall and broke the road leading to the left and right wings. Then they formed a temporary inner wall between the first wall gap and the second wall, put Guan Yu's troops into this gap and continued to fight the position!

Guan Yu's troops successfully rushed in, but because of the small gap, there were not many people rushing in, and the scale of troops that could be invested was only that large.

What's even more troublesome is that the catapult motor is very difficult. Although heavy equipment such as trench bridge trucks and wooden donkey trucks that dig the soil walls have been dug, they are only broken so that they can pass by. This does not mean that the soil can be completely dug out completely, and these bulky equipment such as siege trucks can drive in through the gap.

Therefore, Ju Su's second deep fortification is currently outside the range of range that Guan Yu's siege equipment cannot reach.

This style of play is the latest defensive tactic that Ju Su had developed in the early spring of 198, in the confrontation with Guan Yu. Of course, the original idea was actually Ju Su. Even in the battle against Gongsun Zan's Yijinglou, Ju Su had already begun to think about this "deep elastic defense".

Traditional defensive defense does not allow abandoning any point in the city wall, because as long as the city wall is broken by one point, the city will be broken, the enemy will continue to pour in, and the morale of the defenders will collapse immediately.

Jushu's new defense method is sharp, and he allows him to give up some of the outer defense lines, and the outer edges are broken. As long as the soldiers know that they still have hope and their morale will not collapse. If they persist a little, they will have unexpected gains.

The defensive line of the periphery that is broken but not broken at least prevents the sudden redeployment of the enemy's heavy firepower siege equipment, and also limits the speed of the enemy's troops input. This is the residual heat that the broken corridor can still exert.

But, on the front battlefield at this moment, Guan Yu's infantry had already fallen into a tough battle. Although they broke a wall, they could not be regarded as "slaughtered by crossfire fire from enemy crossbowmen in the second-line urn", the battle was still very difficult.

To put it bluntly, if Huang Quan had come ten days and half a month earlier, he would have had the chance to see a traditional ambush battle similar to "his own troops were deceived to open the city gate and let you enter the urn city, and then cross firepower to shoot a large number of killings on all sides."

However, Guan Yu had already suffered this small loss once more than ten days ago, and Zhuge Liang was there, and the scale of the loss was not large. He stopped the loss after a few hundred people died or injured slightly.

This is why Guan Yu's order today was "before he completely took down the first line of defense, he let his strong crossbowman force him to go up and cross the first wall to shoot and output."

What Huang Quan saw was that the 2.0 version of offense and defense had been upgraded once. Otherwise, Ju Su's second-line defense output would only be more unscrupulous.

Guan Yu had already entered the gap in the first wall and extended to both sides with firepower, and tried his best to cut and kill the crossbowmen of Yuan's army who had not yet completely retreated behind the first wall. The long-range firepower of Yuan's army on both sides of the first wall gradually became sparse.

The Han army's god-arm crossbow gradually pressed against the outside of the first wall, and then shot and fired against the Yuan army on the second line of defense through the wall, suppressing the long-range firepower of the Yuan army's second line of defense against the influx of melee soldiers in the Han army.

The whole process seems to be described in an orderly manner, but in fact each step is piled up with flesh and blood. In addition, the depth hierarchy of Jushu's defense lines is set very well. Once both sides shoot at each other through a defense line, the range is just enough for both sides to reach each other, and the range advantage of the Han army's god arm crossbow will not be obvious.

Of course, the Han army's god-arm crossbowman can choose not to go to the outside of the first wall, but stand directly on the outermost line to shoot. However, due to the height difference and the barrier of the wall in the middle, you can only shoot blindly, but not aim directly to shoot, which greatly reduces efficiency.

In short, the distance between each layer of fortification and the speed and efficiency left by the gap make the attacking side feel like a bone stuck in the throat, which is very uncomfortable, and has the strength but cannot be used at once.

The advantage of the catapult of the offensive and defense was abolished, and the benefit of the crossbows of both sides was also leveled, and the final rest was the fight between the melee soldiers who had already entered the gap.

The bravery and fierce battle levels of the Han army's melee infantry were significantly higher than those of Yuan Shao's army. The horse-slashing swords and quadrang's pyramid guns were also more lethal, and the armor forged by Guangang was even more amazing.

But Ju Su asked someone to speed up construction in advance to block both sides of the battlefield. Guan Yu broke the gap wherever he was, and he was blocking the dirt on both sides of the road. If you don’t want to block it completely, just let you climb over the wall and delay time. Therefore, the Han army infantry was squeezed into a small battlefield and could not be used at all.

The opposite Yuan Jun, who was holding a spear or even an iron halberd, was lined up in a square formation, waiting to fight with the Han army's soldiers. The piercing of the heavy iron halberd was also a great threat to the iron armored soldiers.

Because the weight of the weapons was placed there, and the shields were placed on the wall to exert pressure, the strength of the supravaged in the first row of supravaged iron supra may be the effect of several people helping him to help him with their backs. This kind of powerful miraculous fighting style, even if there is iron armor, is easily squeezed and severely hit, trampled and rushed to death.

On the battlefield per unit area, Ju Su Energy invested several times more hand-to-hand combat soldiers than Guan Yu, and he would not give Guan Yu a large number of spearmen to form a formation and attack the spear. Even with this opportunity, Guan Yu only lowered his advantages and specialties and exchanged his life with Ju Su. This is not the fighting style that Liu Bei's army hopes to see.

For Yuan Shao's side, who cannot defeat the offensive battle at present and wants to rely on the advantage of numbers to drag the defense, if Liu Bei's army is willing to exchange their lives with them, this is Ju Su's most willing thing.

After even bloody battles, as time passed by nearly noon, the Han army's hand-to-hand infantry and Yuan army's gun formation and halberd soldiers suffered heavy casualties, and Guan Yu had to order the troops to retreat.

Especially because the gap in the defense line is still not big enough, even if the front is big and the back is digging more gaps, the Han army reinforcements are still much slower to invest.

At the beginning, both sides were still in good physical strength and there was no problem of the soldiers who were tired of fighting and replacing them. The situation was better.

Once the physical strength decreases, the front row of Ju Su can retreat in turn. Because the battlefield is very wide, there are corridors between the spear square arrays and the halberd square arrays to allow the tired soldiers in the front row to retreat.

As long as Ju Su asks to rotate a group, Guan Yu will not be able to get a rotation, and he is afraid that the chaotic situation of "squeezing the subway during peak hours, and congestion will be formed at the doors of passengers boarding and passengers getting off the bus", Guan Yu will be finished.

On the battlefield, the troops cannot be restrained from "get off first and then go up", and the enemy will not give you this opportunity. Once the situation like Beijing Metro "the passengers get off the bus are squeezed back into the car by the passengers get on the bus", the soldiers who are squeezed will have a dead end.

Guan Yu had no choice but to choose "all the people in the carriage got off the car in an orderly manner and left some dead soldiers to cut off the rear."

When he first sent troops, he did not send a high proportion of iron armored soldiers to fight the vanguard, but used a considerable proportion of leather soldiers, and also had considerations in this regard. When he first fought more than ten days ago, he had no experience. In order to break through as soon as possible, he was all iron armored soldiers at the beginning.

As a result, when he retreated, the damaged iron armor captured by the enemy's defense line alone reached hundreds of sets. Now Guan Yu has learned from his mistakes and adjusted his deployment, allowing some troops with good physical strength to be responsible for cutting off the rear.

Moreover, this will gain time and let the first few soldiers who retreated in batches see if there are any iron armors from their comrades who died in battle. Try to bring them back as much as possible when retreating to reduce seizures. Although the battlefield is actually so chaotic, it is still difficult to operate, and there is always a considerable legacy.

A morning of bloody battles ended up with a scale of thousands of lives. Yuan Shao's side did have many casualties, but in general it was a war of attrition, and it was impossible to fight into an annihilation battle. Guan Yu almost never caught the prisoners, nor did he encircle and eliminate the enemy troops in an integrated area.

Finally, he retreated and counted. Guan Yu's side suffered more than 2,200 casualties. The key was that there were only 900 wounded people. It can be seen that there were more than 1,000 dead in battle. Because Guan Yu's side gave up the retreat on the battlefield, the opportunity to clean the battlefield was left to Yuan Shao's side, so some seriously injured lost their ability to move and could not withdraw.

It is unknown how many Yuan Shao died and injured on the opposite side, but according to observation, it is estimated that it is four or five thousand, but the proportion of deaths in battle is much lower than that of Guan Yu, and it is estimated that only 1,500 people will die.

How can this kind of consumption and change life?

Huang Quan looked at Guan Yu retreating, feeling sad and sighed helplessly:

"From the banner, the generals of Yuan army who are specifically directing soldiers to fight against the Taiwei today seem to be Zhang He and Gao Lan? Unexpectedly, those with unknown accumulated qualifications such as Zhang He and Gao Lan can also dispatch such combat power under the supervision of Ju Su's military supervision, making Yuan Shao's army so resilient, which is really amazing.

The Chinese civil and military officials of Chang'an, and even His Majesty, did not see such a bloody battle. They also wanted to lure the enemy into battle and quickly win the field battle. They were indeed a bit demanding. Please don't worry, after I return to the capital, I will definitely analyze the difficulties of the soldiers in front of the army to His Majesty, and will not urge them again. The Supreme Majesty will choose the opportunity to fight."

...

After the battle, when he returned to the camp that afternoon, Guan Yu was busy asking the soldiers, visiting the wounded, and supervising the dispatch of medical supplies.

Zhuge Liang took Huang Quan to review Ju Shu's tactics, helping Huang Quan better understand so that he could better explain to Chang'an's decision-making level after he returned.

After more than ten days of confrontation, Zhuge Liang's experience of such a large army's stalemate defense battle has actually deepened a little bit. It also made up for some details of the "Article of War. Inner and Outer" he wrote last winter last winter about "How to gather superior forces in large army combat".

After all, Ju Su can fight like this, obviously he has experience in gathering superior forces in the large corps. Zhuge Liang clearly understood the military strategy in this area, but still could not break the deadlock. This shows that Zhuge Liang had lacked some experience in "how to use defensive fortifications to limit the enemy's mobile dispatch and investment when the large corps are in stalemate". This point needs to be checked for omissions.

There is no way, young people who are nineteen years old should continue to grow with high-intensity practical skills.

After confronting Ju Su, Zhuge Liang found that he had a new understanding of the uses of military fortifications like the "Great Wall":

This is not a fortification that prevents the enemy from breaking through any point. Instead, it limits the speed and scale of the enemy's passing through the wall, so that the defensive party can gather more troops on the inside of the wall to fight position war after the opponent passes through the wall.

In fact, the agricultural civilization in China in history used the Great Wall. The Han people's troops always exceeded the nomadic forces on the grassland, but the Han people could not catch up with the nomadic forces on the grassland.

Without the Great Wall, each Han garrison will always be less than the combat power of the whole nomad tribe in the grassland. With the Great Wall, I can at least force you to fight the position war after assembly and dispatch at this point inside the wall, so as not to let nomads fly kites.

These simple military ideas have been summarized thoroughly in the Tang, Song and Ming dynasties when fighting against nomads. Zhuge Liang did not summarize them thoroughly, mainly because in the history of the Han Dynasty, they either had peace and friendship with the Huns, recuperated and farmed, or they had to break up with the Huns during the reign of Emperor Wu.

The Han Dynasty was suppressed by the Huns for a short time, so the strategic and in-depth defense experience in this area was not as profound as that of the Song and Ming dynasties. Zhuge Liang actually had to understand these by using Ju Shu's countermeasures.

"...So, Ju Shu's magical primordiality is the above. Of course, there is another thing to note, that is, he is still fighting defensive battles with this style. There is an important premise, that is, the defensive side has more troops, not to mention far more than the offensive side, at least not significantly less than the offensive side.

In other words, the traditional defense strategy of city passes, such as "Sun Tzu" emphasizes "five of ten sieges and attacks". The defenders who defend the city passes can only be one-fifth of the offense and defense, and will still hold on for a long time.

Now we have a leveraged catapult to quickly break the wall. When we encounter such a long defense corridor, the enemy's troops are still so small, and it will be over if we are broken through one point.

Therefore, Ju Su actually took at least 'double the amount', and even more soldiers, but he did not dare to fight with us. Even if he had no city fortifications and fought with our positions in the field, he could hold on for a long time. Even if he was broken into a wall, his troops were motivated. Knowing that there were many people, breaking the wall did not mean losing.

Now I think about it, although there were many specific details that were not verified when Lian Po fought against the Qin army more than 400,000 yuan. However, Lian Po should also be a person who understood this, so he was the kind of model who led the Zhao army to fight defensive battles of 400,000 yuan. It didn't matter if Wang Yan broke the Baili Stone Defense Line, because Lian Po also had a second Danshui defense line, and the troops that Wang Yan broke into the gap could be repelled and severely injured by Lian Po.

Ju Shu's talent is already far above Lian Po. He combined the current response of our army's new siege weapons and took out a new method that keeps pace with the times to fight defense, which led to the current situation. His defense line deployment is very accurate, with the right depth distance, leaving us everywhere in our throats.

Even though the stone-populated army is strong, it is disconnected from the charge of infantry. Even if it cannot support the infantry, it is also disconnected from the deeper and deeper. If it cannot support the front line, it will be disconnected from the way. When Gongheng returns, he must analyze these experiences clearly. If you can't explain clearly, look at the secret strategy I have given to His Majesty."
To be continued...